Question

Which smallest digit will replace '?' in the number 948?72 so as to make it divisible by 9?

• A. 4
• B. 8
• C. 7
• D. 6

Answer 1

The correct option is D 6

The divisibility rule for a number divisible by 9 is that the sum of the digits of the number should be divisible by 9.


The given number is 948?72.

Let the unknown digit be x.

Sum of the digits = 9 + 4 + 8 + 7 + 2 + x

= 30 + x

Since 30 is not divisible by 9, the next number (nearest to 30) divisible by 9 is 36. Hence, we have to add 6 to the sum of the digits for the number to be divisible by 9.

Hence, the missing digit in the given number is 6.